Related Experiment Video
Updated: May 20, 2026
Mechanical Conflict-Avoidance Assay to Measure Pain Behavior in Mice
Published on: February 18, 2022
From mouse to humans: discovery of the CACNG2 pain susceptibility gene
1Department of Genetics, The Hebrew University of Jerusalem, Jerusalem, Israel. yoni.nis@mail.huji.ac.il
Abstract:
Chronic pain is a major healthcare problem affecting the daily lives of millions with enormous financial costs. The notorious variability and lack of efficient pain relief pharmaceuticals provide both genetic and therapeutic challenge. There are several genetic approaches that aim to uncover the molecular nature of pain phenotypes into their genetic components. Gene mapping using model organisms for various pain phenotypes has led to the identification of novel genes affecting susceptibility and response to pain stimuli. Translational studies have succeeded to tie those genes to human pain syndromes, thus suggesting new targets for drug discovery. In this short review, a perspective on pain genetics and the trajectory from pain phenotype to pain gene involving fine-mapping strategies, bioinformatic analysis and microarray profiling alongside human association analysis will be introduced. This integrated approach has led to identification of CACNG2 as a novel neuropathic pain gene affecting pain susceptibility both in mice and humans. It also serves as a prototype for efficient and economic discovery of pain genes. Comparisons to other methods as well as future directions of pain genetics will be discussed as well.
Insights
Researchers identified CACNG2 as a novel gene influencing neuropathic pain susceptibility in both mice and humans. This discovery offers a new target for drug development and a model for efficient pain gene discovery.
Area of Science:
- Genetics
- Neuroscience
- Pharmacology
Background:
- Chronic pain is a significant global health issue with substantial economic impact.
- Current pain management pharmaceuticals exhibit limited efficacy and high variability.
- Understanding the genetic underpinnings of pain is crucial for developing effective treatments.
Purpose of the Study:
- To review genetic approaches for identifying pain-related genes.
- To highlight the process from pain phenotype to gene discovery.
- To introduce CACNG2 as a novel gene associated with neuropathic pain.
Main Methods:
- Gene mapping in model organisms.
- Translational studies linking animal genes to human pain syndromes.
- Fine-mapping strategies, bioinformatic analysis, and microarray profiling.
- Human association analysis.
Main Results:
- Identification of CACNG2 as a novel gene involved in neuropathic pain.
- CACNG2 influences pain susceptibility in both mice and humans.
- The study presents a prototype for efficient and cost-effective pain gene discovery.
Conclusions:
- The integrated approach successfully identified CACNG2, advancing our understanding of pain genetics.
- CACNG2 represents a promising new target for neuropathic pain drug discovery.
- This methodology serves as a model for future genetic research in pain.
